Sex and creativity
So when men first got to view sexy women and thought they might get sex, they boosted up their displays of creativity, and it didn’t matter how little or how much sex was being offered. Women however only increased their creativity when they thought they had a chance of getting a trustworthy long-term partner that their friends liked.
Source: Peacocks, Picasso, and Parental Investment: The Effects of Romanitic Motives on Creativity. Journal of Personality and Social Psychology 2006.
